| /* |
| * soc-core.c -- ALSA SoC Audio Layer |
| * |
| * Copyright 2005 Wolfson Microelectronics PLC. |
| * Copyright 2005 Openedhand Ltd. |
| * Copyright (C) 2010 Slimlogic Ltd. |
| * Copyright (C) 2010 Texas Instruments Inc. |
| * |
| * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
| * with code, comments and ideas from :- |
| * Richard Purdie <richard@openedhand.com> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| * |
| * TODO: |
| * o Add hw rules to enforce rates, etc. |
| * o More testing with other codecs/machines. |
| * o Add more codecs and platforms to ensure good API coverage. |
| * o Support TDM on PCM and I2S |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/pm.h> |
| #include <linux/bitops.h> |
| #include <linux/debugfs.h> |
| #include <linux/platform_device.h> |
| #include <linux/ctype.h> |
| #include <linux/slab.h> |
| #include <sound/ac97_codec.h> |
| #include <sound/core.h> |
| #include <sound/jack.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| #include <sound/initval.h> |
| |
| #define CREATE_TRACE_POINTS |
| #include <trace/events/asoc.h> |
| |
| #define NAME_SIZE 32 |
| |
| static DEFINE_MUTEX(pcm_mutex); |
| static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq); |
| |
| #ifdef CONFIG_DEBUG_FS |
| struct dentry *snd_soc_debugfs_root; |
| EXPORT_SYMBOL_GPL(snd_soc_debugfs_root); |
| #endif |
| |
| static DEFINE_MUTEX(client_mutex); |
| static LIST_HEAD(card_list); |
| static LIST_HEAD(dai_list); |
| static LIST_HEAD(platform_list); |
| static LIST_HEAD(codec_list); |
| |
| static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num); |
| |
| /* |
| * This is a timeout to do a DAPM powerdown after a stream is closed(). |
| * It can be used to eliminate pops between different playback streams, e.g. |
| * between two audio tracks. |
| */ |
| static int pmdown_time = 5000; |
| module_param(pmdown_time, int, 0); |
| MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)"); |
| |
| /* returns the minimum number of bytes needed to represent |
| * a particular given value */ |
| static int min_bytes_needed(unsigned long val) |
| { |
| int c = 0; |
| int i; |
| |
| for (i = (sizeof val * 8) - 1; i >= 0; --i, ++c) |
| if (val & (1UL << i)) |
| break; |
| c = (sizeof val * 8) - c; |
| if (!c || (c % 8)) |
| c = (c + 8) / 8; |
| else |
| c /= 8; |
| return c; |
| } |
| |
| /* fill buf which is 'len' bytes with a formatted |
| * string of the form 'reg: value\n' */ |
| static int format_register_str(struct snd_soc_codec *codec, |
| unsigned int reg, char *buf, size_t len) |
| { |
| int wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2; |
| int regsize = codec->driver->reg_word_size * 2; |
| int ret; |
| char tmpbuf[len + 1]; |
| char regbuf[regsize + 1]; |
| |
| /* since tmpbuf is allocated on the stack, warn the callers if they |
| * try to abuse this function */ |
| WARN_ON(len > 63); |
| |
| /* +2 for ': ' and + 1 for '\n' */ |
| if (wordsize + regsize + 2 + 1 != len) |
| return -EINVAL; |
| |
| ret = snd_soc_read(codec , reg); |
| if (ret < 0) { |
| memset(regbuf, 'X', regsize); |
| regbuf[regsize] = '\0'; |
| } else { |
| snprintf(regbuf, regsize + 1, "%.*x", regsize, ret); |
| } |
| |
| /* prepare the buffer */ |
| snprintf(tmpbuf, len + 1, "%.*x: %s\n", wordsize, reg, regbuf); |
| /* copy it back to the caller without the '\0' */ |
| memcpy(buf, tmpbuf, len); |
| |
| return 0; |
| } |
| |
| /* codec register dump */ |
| static ssize_t soc_codec_reg_show(struct snd_soc_codec *codec, char *buf, |
| size_t count, loff_t pos) |
| { |
| int i, step = 1; |
| int wordsize, regsize; |
| int len; |
| size_t total = 0; |
| loff_t p = 0; |
| |
| wordsize = min_bytes_needed(codec->driver->reg_cache_size) * 2; |
| regsize = codec->driver->reg_word_size * 2; |
| |
| len = wordsize + regsize + 2 + 1; |
| |
| if (!codec->driver->reg_cache_size) |
| return 0; |
| |
| if (codec->driver->reg_cache_step) |
| step = codec->driver->reg_cache_step; |
| |
| for (i = 0; i < codec->driver->reg_cache_size; i += step) { |
| if (codec->readable_register && !codec->readable_register(codec, i)) |
| continue; |
| if (codec->driver->display_register) { |
| count += codec->driver->display_register(codec, buf + count, |
| PAGE_SIZE - count, i); |
| } else { |
| /* only support larger than PAGE_SIZE bytes debugfs |
| * entries for the default case */ |
| if (p >= pos) { |
| if (total + len >= count - 1) |
| break; |
| format_register_str(codec, i, buf + total, len); |
| total += len; |
| } |
| p += len; |
| } |
| } |
| |
| total = min(total, count - 1); |
| |
| return total; |
| } |
| |
| static ssize_t codec_reg_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct snd_soc_pcm_runtime *rtd = |
| container_of(dev, struct snd_soc_pcm_runtime, dev); |
| |
| return soc_codec_reg_show(rtd->codec, buf, PAGE_SIZE, 0); |
| } |
| |
| static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); |
| |
| static ssize_t pmdown_time_show(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct snd_soc_pcm_runtime *rtd = |
| container_of(dev, struct snd_soc_pcm_runtime, dev); |
| |
| return sprintf(buf, "%ld\n", rtd->pmdown_time); |
| } |
| |
| static ssize_t pmdown_time_set(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct snd_soc_pcm_runtime *rtd = |
| container_of(dev, struct snd_soc_pcm_runtime, dev); |
| int ret; |
| |
| ret = strict_strtol(buf, 10, &rtd->pmdown_time); |
| if (ret) |
| return ret; |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(pmdown_time, 0644, pmdown_time_show, pmdown_time_set); |
| |
| #ifdef CONFIG_DEBUG_FS |
| static int codec_reg_open_file(struct inode *inode, struct file *file) |
| { |
| file->private_data = inode->i_private; |
| return 0; |
| } |
| |
| static ssize_t codec_reg_read_file(struct file *file, char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| ssize_t ret; |
| struct snd_soc_codec *codec = file->private_data; |
| char *buf; |
| |
| if (*ppos < 0 || !count) |
| return -EINVAL; |
| |
| buf = kmalloc(count, GFP_KERNEL); |
| if (!buf) |
| return -ENOMEM; |
| |
| ret = soc_codec_reg_show(codec, buf, count, *ppos); |
| if (ret >= 0) { |
| if (copy_to_user(user_buf, buf, ret)) { |
| kfree(buf); |
| return -EFAULT; |
| } |
| *ppos += ret; |
| } |
| |
| kfree(buf); |
| return ret; |
| } |
| |
| static ssize_t codec_reg_write_file(struct file *file, |
| const char __user *user_buf, size_t count, loff_t *ppos) |
| { |
| char buf[32]; |
| size_t buf_size; |
| char *start = buf; |
| unsigned long reg, value; |
| int step = 1; |
| struct snd_soc_codec *codec = file->private_data; |
| |
| buf_size = min(count, (sizeof(buf)-1)); |
| if (copy_from_user(buf, user_buf, buf_size)) |
| return -EFAULT; |
| buf[buf_size] = 0; |
| |
| if (codec->driver->reg_cache_step) |
| step = codec->driver->reg_cache_step; |
| |
| while (*start == ' ') |
| start++; |
| reg = simple_strtoul(start, &start, 16); |
| while (*start == ' ') |
| start++; |
| if (strict_strtoul(start, 16, &value)) |
| return -EINVAL; |
| |
| /* Userspace has been fiddling around behind the kernel's back */ |
| add_taint(TAINT_USER); |
| |
| snd_soc_write(codec, reg, value); |
| return buf_size; |
| } |
| |
| static const struct file_operations codec_reg_fops = { |
| .open = codec_reg_open_file, |
| .read = codec_reg_read_file, |
| .write = codec_reg_write_file, |
| .llseek = default_llseek, |
| }; |
| |
| static void soc_init_codec_debugfs(struct snd_soc_codec *codec) |
| { |
| struct dentry *debugfs_card_root = codec->card->debugfs_card_root; |
| |
| codec->debugfs_codec_root = debugfs_create_dir(codec->name, |
| debugfs_card_root); |
| if (!codec->debugfs_codec_root) { |
| printk(KERN_WARNING |
| "ASoC: Failed to create codec debugfs directory\n"); |
| return; |
| } |
| |
| debugfs_create_bool("cache_sync", 0444, codec->debugfs_codec_root, |
| &codec->cache_sync); |
| debugfs_create_bool("cache_only", 0444, codec->debugfs_codec_root, |
| &codec->cache_only); |
| |
| codec->debugfs_reg = debugfs_create_file("codec_reg", 0644, |
| codec->debugfs_codec_root, |
| codec, &codec_reg_fops); |
| if (!codec->debugfs_reg) |
| printk(KERN_WARNING |
| "ASoC: Failed to create codec register debugfs file\n"); |
| |
| snd_soc_dapm_debugfs_init(&codec->dapm, codec->debugfs_codec_root); |
| } |
| |
| static void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) |
| { |
| debugfs_remove_recursive(codec->debugfs_codec_root); |
| } |
| |
| static ssize_t codec_list_read_file(struct file *file, char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
| ssize_t len, ret = 0; |
| struct snd_soc_codec *codec; |
| |
| if (!buf) |
| return -ENOMEM; |
| |
| list_for_each_entry(codec, &codec_list, list) { |
| len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", |
| codec->name); |
| if (len >= 0) |
| ret += len; |
| if (ret > PAGE_SIZE) { |
| ret = PAGE_SIZE; |
| break; |
| } |
| } |
| |
| if (ret >= 0) |
| ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); |
| |
| kfree(buf); |
| |
| return ret; |
| } |
| |
| static const struct file_operations codec_list_fops = { |
| .read = codec_list_read_file, |
| .llseek = default_llseek,/* read accesses f_pos */ |
| }; |
| |
| static ssize_t dai_list_read_file(struct file *file, char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
| ssize_t len, ret = 0; |
| struct snd_soc_dai *dai; |
| |
| if (!buf) |
| return -ENOMEM; |
| |
| list_for_each_entry(dai, &dai_list, list) { |
| len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", dai->name); |
| if (len >= 0) |
| ret += len; |
| if (ret > PAGE_SIZE) { |
| ret = PAGE_SIZE; |
| break; |
| } |
| } |
| |
| ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); |
| |
| kfree(buf); |
| |
| return ret; |
| } |
| |
| static const struct file_operations dai_list_fops = { |
| .read = dai_list_read_file, |
| .llseek = default_llseek,/* read accesses f_pos */ |
| }; |
| |
| static ssize_t platform_list_read_file(struct file *file, |
| char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| char *buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
| ssize_t len, ret = 0; |
| struct snd_soc_platform *platform; |
| |
| if (!buf) |
| return -ENOMEM; |
| |
| list_for_each_entry(platform, &platform_list, list) { |
| len = snprintf(buf + ret, PAGE_SIZE - ret, "%s\n", |
| platform->name); |
| if (len >= 0) |
| ret += len; |
| if (ret > PAGE_SIZE) { |
| ret = PAGE_SIZE; |
| break; |
| } |
| } |
| |
| ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); |
| |
| kfree(buf); |
| |
| return ret; |
| } |
| |
| static const struct file_operations platform_list_fops = { |
| .read = platform_list_read_file, |
| .llseek = default_llseek,/* read accesses f_pos */ |
| }; |
| |
| static void soc_init_card_debugfs(struct snd_soc_card *card) |
| { |
| card->debugfs_card_root = debugfs_create_dir(card->name, |
| snd_soc_debugfs_root); |
| if (!card->debugfs_card_root) { |
| dev_warn(card->dev, |
| "ASoC: Failed to create codec debugfs directory\n"); |
| return; |
| } |
| |
| card->debugfs_pop_time = debugfs_create_u32("dapm_pop_time", 0644, |
| card->debugfs_card_root, |
| &card->pop_time); |
| if (!card->debugfs_pop_time) |
| dev_warn(card->dev, |
| "Failed to create pop time debugfs file\n"); |
| } |
| |
| static void soc_cleanup_card_debugfs(struct snd_soc_card *card) |
| { |
| debugfs_remove_recursive(card->debugfs_card_root); |
| } |
| |
| #else |
| |
| static inline void soc_init_codec_debugfs(struct snd_soc_codec *codec) |
| { |
| } |
| |
| static inline void soc_cleanup_codec_debugfs(struct snd_soc_codec *codec) |
| { |
| } |
| |
| static inline void soc_init_card_debugfs(struct snd_soc_card *card) |
| { |
| } |
| |
| static inline void soc_cleanup_card_debugfs(struct snd_soc_card *card) |
| { |
| } |
| #endif |
| |
| #ifdef CONFIG_SND_SOC_AC97_BUS |
| /* unregister ac97 codec */ |
| static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) |
| { |
| if (codec->ac97->dev.bus) |
| device_unregister(&codec->ac97->dev); |
| return 0; |
| } |
| |
| /* stop no dev release warning */ |
| static void soc_ac97_device_release(struct device *dev){} |
| |
| /* register ac97 codec to bus */ |
| static int soc_ac97_dev_register(struct snd_soc_codec *codec) |
| { |
| int err; |
| |
| codec->ac97->dev.bus = &ac97_bus_type; |
| codec->ac97->dev.parent = codec->card->dev; |
| codec->ac97->dev.release = soc_ac97_device_release; |
| |
| dev_set_name(&codec->ac97->dev, "%d-%d:%s", |
| codec->card->snd_card->number, 0, codec->name); |
| err = device_register(&codec->ac97->dev); |
| if (err < 0) { |
| snd_printk(KERN_ERR "Can't register ac97 bus\n"); |
| codec->ac97->dev.bus = NULL; |
| return err; |
| } |
| return 0; |
| } |
| #endif |
| |
| static int soc_pcm_apply_symmetry(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| int ret; |
| |
| if (!codec_dai->driver->symmetric_rates && |
| !cpu_dai->driver->symmetric_rates && |
| !rtd->dai_link->symmetric_rates) |
| return 0; |
| |
| /* This can happen if multiple streams are starting simultaneously - |
| * the second can need to get its constraints before the first has |
| * picked a rate. Complain and allow the application to carry on. |
| */ |
| if (!rtd->rate) { |
| dev_warn(&rtd->dev, |
| "Not enforcing symmetric_rates due to race\n"); |
| return 0; |
| } |
| |
| dev_dbg(&rtd->dev, "Symmetry forces %dHz rate\n", rtd->rate); |
| |
| ret = snd_pcm_hw_constraint_minmax(substream->runtime, |
| SNDRV_PCM_HW_PARAM_RATE, |
| rtd->rate, rtd->rate); |
| if (ret < 0) { |
| dev_err(&rtd->dev, |
| "Unable to apply rate symmetry constraint: %d\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Called by ALSA when a PCM substream is opened, the runtime->hw record is |
| * then initialized and any private data can be allocated. This also calls |
| * startup for the cpu DAI, platform, machine and codec DAI. |
| */ |
| static int soc_pcm_open(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| struct snd_soc_platform *platform = rtd->platform; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; |
| struct snd_soc_dai_driver *codec_dai_drv = codec_dai->driver; |
| int ret = 0; |
| |
| mutex_lock(&pcm_mutex); |
| |
| /* startup the audio subsystem */ |
| if (cpu_dai->driver->ops->startup) { |
| ret = cpu_dai->driver->ops->startup(substream, cpu_dai); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: can't open interface %s\n", |
| cpu_dai->name); |
| goto out; |
| } |
| } |
| |
| if (platform->driver->ops && platform->driver->ops->open) { |
| ret = platform->driver->ops->open(substream); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); |
| goto platform_err; |
| } |
| } |
| |
| if (codec_dai->driver->ops->startup) { |
| ret = codec_dai->driver->ops->startup(substream, codec_dai); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: can't open codec %s\n", |
| codec_dai->name); |
| goto codec_dai_err; |
| } |
| } |
| |
| if (rtd->dai_link->ops && rtd->dai_link->ops->startup) { |
| ret = rtd->dai_link->ops->startup(substream); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: %s startup failed\n", rtd->dai_link->name); |
| goto machine_err; |
| } |
| } |
| |
| /* Check that the codec and cpu DAIs are compatible */ |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| runtime->hw.rate_min = |
| max(codec_dai_drv->playback.rate_min, |
| cpu_dai_drv->playback.rate_min); |
| runtime->hw.rate_max = |
| min(codec_dai_drv->playback.rate_max, |
| cpu_dai_drv->playback.rate_max); |
| runtime->hw.channels_min = |
| max(codec_dai_drv->playback.channels_min, |
| cpu_dai_drv->playback.channels_min); |
| runtime->hw.channels_max = |
| min(codec_dai_drv->playback.channels_max, |
| cpu_dai_drv->playback.channels_max); |
| runtime->hw.formats = |
| codec_dai_drv->playback.formats & cpu_dai_drv->playback.formats; |
| runtime->hw.rates = |
| codec_dai_drv->playback.rates & cpu_dai_drv->playback.rates; |
| if (codec_dai_drv->playback.rates |
| & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) |
| runtime->hw.rates |= cpu_dai_drv->playback.rates; |
| if (cpu_dai_drv->playback.rates |
| & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) |
| runtime->hw.rates |= codec_dai_drv->playback.rates; |
| } else { |
| runtime->hw.rate_min = |
| max(codec_dai_drv->capture.rate_min, |
| cpu_dai_drv->capture.rate_min); |
| runtime->hw.rate_max = |
| min(codec_dai_drv->capture.rate_max, |
| cpu_dai_drv->capture.rate_max); |
| runtime->hw.channels_min = |
| max(codec_dai_drv->capture.channels_min, |
| cpu_dai_drv->capture.channels_min); |
| runtime->hw.channels_max = |
| min(codec_dai_drv->capture.channels_max, |
| cpu_dai_drv->capture.channels_max); |
| runtime->hw.formats = |
| codec_dai_drv->capture.formats & cpu_dai_drv->capture.formats; |
| runtime->hw.rates = |
| codec_dai_drv->capture.rates & cpu_dai_drv->capture.rates; |
| if (codec_dai_drv->capture.rates |
| & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) |
| runtime->hw.rates |= cpu_dai_drv->capture.rates; |
| if (cpu_dai_drv->capture.rates |
| & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS)) |
| runtime->hw.rates |= codec_dai_drv->capture.rates; |
| } |
| |
| ret = -EINVAL; |
| snd_pcm_limit_hw_rates(runtime); |
| if (!runtime->hw.rates) { |
| printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", |
| codec_dai->name, cpu_dai->name); |
| goto config_err; |
| } |
| if (!runtime->hw.formats) { |
| printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", |
| codec_dai->name, cpu_dai->name); |
| goto config_err; |
| } |
| if (!runtime->hw.channels_min || !runtime->hw.channels_max || |
| runtime->hw.channels_min > runtime->hw.channels_max) { |
| printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", |
| codec_dai->name, cpu_dai->name); |
| goto config_err; |
| } |
| |
| /* Symmetry only applies if we've already got an active stream. */ |
| if (cpu_dai->active || codec_dai->active) { |
| ret = soc_pcm_apply_symmetry(substream); |
| if (ret != 0) |
| goto config_err; |
| } |
| |
| pr_debug("asoc: %s <-> %s info:\n", |
| codec_dai->name, cpu_dai->name); |
| pr_debug("asoc: rate mask 0x%x\n", runtime->hw.rates); |
| pr_debug("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, |
| runtime->hw.channels_max); |
| pr_debug("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, |
| runtime->hw.rate_max); |
| |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| cpu_dai->playback_active++; |
| codec_dai->playback_active++; |
| } else { |
| cpu_dai->capture_active++; |
| codec_dai->capture_active++; |
| } |
| cpu_dai->active++; |
| codec_dai->active++; |
| rtd->codec->active++; |
| mutex_unlock(&pcm_mutex); |
| return 0; |
| |
| config_err: |
| if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) |
| rtd->dai_link->ops->shutdown(substream); |
| |
| machine_err: |
| if (codec_dai->driver->ops->shutdown) |
| codec_dai->driver->ops->shutdown(substream, codec_dai); |
| |
| codec_dai_err: |
| if (platform->driver->ops && platform->driver->ops->close) |
| platform->driver->ops->close(substream); |
| |
| platform_err: |
| if (cpu_dai->driver->ops->shutdown) |
| cpu_dai->driver->ops->shutdown(substream, cpu_dai); |
| out: |
| mutex_unlock(&pcm_mutex); |
| return ret; |
| } |
| |
| /* |
| * Power down the audio subsystem pmdown_time msecs after close is called. |
| * This is to ensure there are no pops or clicks in between any music tracks |
| * due to DAPM power cycling. |
| */ |
| static void close_delayed_work(struct work_struct *work) |
| { |
| struct snd_soc_pcm_runtime *rtd = |
| container_of(work, struct snd_soc_pcm_runtime, delayed_work.work); |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| |
| mutex_lock(&pcm_mutex); |
| |
| pr_debug("pop wq checking: %s status: %s waiting: %s\n", |
| codec_dai->driver->playback.stream_name, |
| codec_dai->playback_active ? "active" : "inactive", |
| codec_dai->pop_wait ? "yes" : "no"); |
| |
| /* are we waiting on this codec DAI stream */ |
| if (codec_dai->pop_wait == 1) { |
| codec_dai->pop_wait = 0; |
| snd_soc_dapm_stream_event(rtd, |
| codec_dai->driver->playback.stream_name, |
| SND_SOC_DAPM_STREAM_STOP); |
| } |
| |
| mutex_unlock(&pcm_mutex); |
| } |
| |
| /* |
| * Called by ALSA when a PCM substream is closed. Private data can be |
| * freed here. The cpu DAI, codec DAI, machine and platform are also |
| * shutdown. |
| */ |
| static int soc_codec_close(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_platform *platform = rtd->platform; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| struct snd_soc_codec *codec = rtd->codec; |
| |
| mutex_lock(&pcm_mutex); |
| |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| cpu_dai->playback_active--; |
| codec_dai->playback_active--; |
| } else { |
| cpu_dai->capture_active--; |
| codec_dai->capture_active--; |
| } |
| |
| cpu_dai->active--; |
| codec_dai->active--; |
| codec->active--; |
| |
| /* Muting the DAC suppresses artifacts caused during digital |
| * shutdown, for example from stopping clocks. |
| */ |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| snd_soc_dai_digital_mute(codec_dai, 1); |
| |
| if (cpu_dai->driver->ops->shutdown) |
| cpu_dai->driver->ops->shutdown(substream, cpu_dai); |
| |
| if (codec_dai->driver->ops->shutdown) |
| codec_dai->driver->ops->shutdown(substream, codec_dai); |
| |
| if (rtd->dai_link->ops && rtd->dai_link->ops->shutdown) |
| rtd->dai_link->ops->shutdown(substream); |
| |
| if (platform->driver->ops && platform->driver->ops->close) |
| platform->driver->ops->close(substream); |
| cpu_dai->runtime = NULL; |
| |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| /* start delayed pop wq here for playback streams */ |
| codec_dai->pop_wait = 1; |
| schedule_delayed_work(&rtd->delayed_work, |
| msecs_to_jiffies(rtd->pmdown_time)); |
| } else { |
| /* capture streams can be powered down now */ |
| snd_soc_dapm_stream_event(rtd, |
| codec_dai->driver->capture.stream_name, |
| SND_SOC_DAPM_STREAM_STOP); |
| } |
| |
| mutex_unlock(&pcm_mutex); |
| return 0; |
| } |
| |
| /* |
| * Called by ALSA when the PCM substream is prepared, can set format, sample |
| * rate, etc. This function is non atomic and can be called multiple times, |
| * it can refer to the runtime info. |
| */ |
| static int soc_pcm_prepare(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_platform *platform = rtd->platform; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| int ret = 0; |
| |
| mutex_lock(&pcm_mutex); |
| |
| if (rtd->dai_link->ops && rtd->dai_link->ops->prepare) { |
| ret = rtd->dai_link->ops->prepare(substream); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: machine prepare error\n"); |
| goto out; |
| } |
| } |
| |
| if (platform->driver->ops && platform->driver->ops->prepare) { |
| ret = platform->driver->ops->prepare(substream); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: platform prepare error\n"); |
| goto out; |
| } |
| } |
| |
| if (codec_dai->driver->ops->prepare) { |
| ret = codec_dai->driver->ops->prepare(substream, codec_dai); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: codec DAI prepare error\n"); |
| goto out; |
| } |
| } |
| |
| if (cpu_dai->driver->ops->prepare) { |
| ret = cpu_dai->driver->ops->prepare(substream, cpu_dai); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: cpu DAI prepare error\n"); |
| goto out; |
| } |
| } |
| |
| /* cancel any delayed stream shutdown that is pending */ |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && |
| codec_dai->pop_wait) { |
| codec_dai->pop_wait = 0; |
| cancel_delayed_work(&rtd->delayed_work); |
| } |
| |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| snd_soc_dapm_stream_event(rtd, |
| codec_dai->driver->playback.stream_name, |
| SND_SOC_DAPM_STREAM_START); |
| else |
| snd_soc_dapm_stream_event(rtd, |
| codec_dai->driver->capture.stream_name, |
| SND_SOC_DAPM_STREAM_START); |
| |
| snd_soc_dai_digital_mute(codec_dai, 0); |
| |
| out: |
| mutex_unlock(&pcm_mutex); |
| return ret; |
| } |
| |
| /* |
| * Called by ALSA when the hardware params are set by application. This |
| * function can also be called multiple times and can allocate buffers |
| * (using snd_pcm_lib_* ). It's non-atomic. |
| */ |
| static int soc_pcm_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_platform *platform = rtd->platform; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| int ret = 0; |
| |
| mutex_lock(&pcm_mutex); |
| |
| if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) { |
| ret = rtd->dai_link->ops->hw_params(substream, params); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: machine hw_params failed\n"); |
| goto out; |
| } |
| } |
| |
| if (codec_dai->driver->ops->hw_params) { |
| ret = codec_dai->driver->ops->hw_params(substream, params, codec_dai); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: can't set codec %s hw params\n", |
| codec_dai->name); |
| goto codec_err; |
| } |
| } |
| |
| if (cpu_dai->driver->ops->hw_params) { |
| ret = cpu_dai->driver->ops->hw_params(substream, params, cpu_dai); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: interface %s hw params failed\n", |
| cpu_dai->name); |
| goto interface_err; |
| } |
| } |
| |
| if (platform->driver->ops && platform->driver->ops->hw_params) { |
| ret = platform->driver->ops->hw_params(substream, params); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: platform %s hw params failed\n", |
| platform->name); |
| goto platform_err; |
| } |
| } |
| |
| rtd->rate = params_rate(params); |
| |
| out: |
| mutex_unlock(&pcm_mutex); |
| return ret; |
| |
| platform_err: |
| if (cpu_dai->driver->ops->hw_free) |
| cpu_dai->driver->ops->hw_free(substream, cpu_dai); |
| |
| interface_err: |
| if (codec_dai->driver->ops->hw_free) |
| codec_dai->driver->ops->hw_free(substream, codec_dai); |
| |
| codec_err: |
| if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) |
| rtd->dai_link->ops->hw_free(substream); |
| |
| mutex_unlock(&pcm_mutex); |
| return ret; |
| } |
| |
| /* |
| * Frees resources allocated by hw_params, can be called multiple times |
| */ |
| static int soc_pcm_hw_free(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_platform *platform = rtd->platform; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| struct snd_soc_codec *codec = rtd->codec; |
| |
| mutex_lock(&pcm_mutex); |
| |
| /* apply codec digital mute */ |
| if (!codec->active) |
| snd_soc_dai_digital_mute(codec_dai, 1); |
| |
| /* free any machine hw params */ |
| if (rtd->dai_link->ops && rtd->dai_link->ops->hw_free) |
| rtd->dai_link->ops->hw_free(substream); |
| |
| /* free any DMA resources */ |
| if (platform->driver->ops && platform->driver->ops->hw_free) |
| platform->driver->ops->hw_free(substream); |
| |
| /* now free hw params for the DAIs */ |
| if (codec_dai->driver->ops->hw_free) |
| codec_dai->driver->ops->hw_free(substream, codec_dai); |
| |
| if (cpu_dai->driver->ops->hw_free) |
| cpu_dai->driver->ops->hw_free(substream, cpu_dai); |
| |
| mutex_unlock(&pcm_mutex); |
| return 0; |
| } |
| |
| static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_platform *platform = rtd->platform; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| int ret; |
| |
| if (codec_dai->driver->ops->trigger) { |
| ret = codec_dai->driver->ops->trigger(substream, cmd, codec_dai); |
| if (ret < 0) |
| return ret; |
| } |
| |
| if (platform->driver->ops && platform->driver->ops->trigger) { |
| ret = platform->driver->ops->trigger(substream, cmd); |
| if (ret < 0) |
| return ret; |
| } |
| |
| if (cpu_dai->driver->ops->trigger) { |
| ret = cpu_dai->driver->ops->trigger(substream, cmd, cpu_dai); |
| if (ret < 0) |
| return ret; |
| } |
| return 0; |
| } |
| |
| /* |
| * soc level wrapper for pointer callback |
| * If cpu_dai, codec_dai, platform driver has the delay callback, than |
| * the runtime->delay will be updated accordingly. |
| */ |
| static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_platform *platform = rtd->platform; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| snd_pcm_uframes_t offset = 0; |
| snd_pcm_sframes_t delay = 0; |
| |
| if (platform->driver->ops && platform->driver->ops->pointer) |
| offset = platform->driver->ops->pointer(substream); |
| |
| if (cpu_dai->driver->ops->delay) |
| delay += cpu_dai->driver->ops->delay(substream, cpu_dai); |
| |
| if (codec_dai->driver->ops->delay) |
| delay += codec_dai->driver->ops->delay(substream, codec_dai); |
| |
| if (platform->driver->delay) |
| delay += platform->driver->delay(substream, codec_dai); |
| |
| runtime->delay = delay; |
| |
| return offset; |
| } |
| |
| /* ASoC PCM operations */ |
| static struct snd_pcm_ops soc_pcm_ops = { |
| .open = soc_pcm_open, |
| .close = soc_codec_close, |
| .hw_params = soc_pcm_hw_params, |
| .hw_free = soc_pcm_hw_free, |
| .prepare = soc_pcm_prepare, |
| .trigger = soc_pcm_trigger, |
| .pointer = soc_pcm_pointer, |
| }; |
| |
| #ifdef CONFIG_PM_SLEEP |
| /* powers down audio subsystem for suspend */ |
| int snd_soc_suspend(struct device *dev) |
| { |
| struct snd_soc_card *card = dev_get_drvdata(dev); |
| struct snd_soc_codec *codec; |
| int i; |
| |
| /* If the initialization of this soc device failed, there is no codec |
| * associated with it. Just bail out in this case. |
| */ |
| if (list_empty(&card->codec_dev_list)) |
| return 0; |
| |
| /* Due to the resume being scheduled into a workqueue we could |
| * suspend before that's finished - wait for it to complete. |
| */ |
| snd_power_lock(card->snd_card); |
| snd_power_wait(card->snd_card, SNDRV_CTL_POWER_D0); |
| snd_power_unlock(card->snd_card); |
| |
| /* we're going to block userspace touching us until resume completes */ |
| snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D3hot); |
| |
| /* mute any active DACs */ |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai *dai = card->rtd[i].codec_dai; |
| struct snd_soc_dai_driver *drv = dai->driver; |
| |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| if (drv->ops->digital_mute && dai->playback_active) |
| drv->ops->digital_mute(dai, 1); |
| } |
| |
| /* suspend all pcms */ |
| for (i = 0; i < card->num_rtd; i++) { |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| snd_pcm_suspend_all(card->rtd[i].pcm); |
| } |
| |
| if (card->suspend_pre) |
| card->suspend_pre(card); |
| |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| struct snd_soc_platform *platform = card->rtd[i].platform; |
| |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| if (cpu_dai->driver->suspend && !cpu_dai->driver->ac97_control) |
| cpu_dai->driver->suspend(cpu_dai); |
| if (platform->driver->suspend && !platform->suspended) { |
| platform->driver->suspend(cpu_dai); |
| platform->suspended = 1; |
| } |
| } |
| |
| /* close any waiting streams and save state */ |
| for (i = 0; i < card->num_rtd; i++) { |
| flush_delayed_work_sync(&card->rtd[i].delayed_work); |
| card->rtd[i].codec->dapm.suspend_bias_level = card->rtd[i].codec->dapm.bias_level; |
| } |
| |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver; |
| |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| if (driver->playback.stream_name != NULL) |
| snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name, |
| SND_SOC_DAPM_STREAM_SUSPEND); |
| |
| if (driver->capture.stream_name != NULL) |
| snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name, |
| SND_SOC_DAPM_STREAM_SUSPEND); |
| } |
| |
| /* suspend all CODECs */ |
| list_for_each_entry(codec, &card->codec_dev_list, card_list) { |
| /* If there are paths active then the CODEC will be held with |
| * bias _ON and should not be suspended. */ |
| if (!codec->suspended && codec->driver->suspend) { |
| switch (codec->dapm.bias_level) { |
| case SND_SOC_BIAS_STANDBY: |
| case SND_SOC_BIAS_OFF: |
| codec->driver->suspend(codec, PMSG_SUSPEND); |
| codec->suspended = 1; |
| codec->cache_sync = 1; |
| break; |
| default: |
| dev_dbg(codec->dev, "CODEC is on over suspend\n"); |
| break; |
| } |
| } |
| } |
| |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| if (cpu_dai->driver->suspend && cpu_dai->driver->ac97_control) |
| cpu_dai->driver->suspend(cpu_dai); |
| } |
| |
| if (card->suspend_post) |
| card->suspend_post(card); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_suspend); |
| |
| /* deferred resume work, so resume can complete before we finished |
| * setting our codec back up, which can be very slow on I2C |
| */ |
| static void soc_resume_deferred(struct work_struct *work) |
| { |
| struct snd_soc_card *card = |
| container_of(work, struct snd_soc_card, deferred_resume_work); |
| struct snd_soc_codec *codec; |
| int i; |
| |
| /* our power state is still SNDRV_CTL_POWER_D3hot from suspend time, |
| * so userspace apps are blocked from touching us |
| */ |
| |
| dev_dbg(card->dev, "starting resume work\n"); |
| |
| /* Bring us up into D2 so that DAPM starts enabling things */ |
| snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D2); |
| |
| if (card->resume_pre) |
| card->resume_pre(card); |
| |
| /* resume AC97 DAIs */ |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| if (cpu_dai->driver->resume && cpu_dai->driver->ac97_control) |
| cpu_dai->driver->resume(cpu_dai); |
| } |
| |
| list_for_each_entry(codec, &card->codec_dev_list, card_list) { |
| /* If the CODEC was idle over suspend then it will have been |
| * left with bias OFF or STANDBY and suspended so we must now |
| * resume. Otherwise the suspend was suppressed. |
| */ |
| if (codec->driver->resume && codec->suspended) { |
| switch (codec->dapm.bias_level) { |
| case SND_SOC_BIAS_STANDBY: |
| case SND_SOC_BIAS_OFF: |
| codec->driver->resume(codec); |
| codec->suspended = 0; |
| break; |
| default: |
| dev_dbg(codec->dev, "CODEC was on over suspend\n"); |
| break; |
| } |
| } |
| } |
| |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai_driver *driver = card->rtd[i].codec_dai->driver; |
| |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| if (driver->playback.stream_name != NULL) |
| snd_soc_dapm_stream_event(&card->rtd[i], driver->playback.stream_name, |
| SND_SOC_DAPM_STREAM_RESUME); |
| |
| if (driver->capture.stream_name != NULL) |
| snd_soc_dapm_stream_event(&card->rtd[i], driver->capture.stream_name, |
| SND_SOC_DAPM_STREAM_RESUME); |
| } |
| |
| /* unmute any active DACs */ |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai *dai = card->rtd[i].codec_dai; |
| struct snd_soc_dai_driver *drv = dai->driver; |
| |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| if (drv->ops->digital_mute && dai->playback_active) |
| drv->ops->digital_mute(dai, 0); |
| } |
| |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| struct snd_soc_platform *platform = card->rtd[i].platform; |
| |
| if (card->rtd[i].dai_link->ignore_suspend) |
| continue; |
| |
| if (cpu_dai->driver->resume && !cpu_dai->driver->ac97_control) |
| cpu_dai->driver->resume(cpu_dai); |
| if (platform->driver->resume && platform->suspended) { |
| platform->driver->resume(cpu_dai); |
| platform->suspended = 0; |
| } |
| } |
| |
| if (card->resume_post) |
| card->resume_post(card); |
| |
| dev_dbg(card->dev, "resume work completed\n"); |
| |
| /* userspace can access us now we are back as we were before */ |
| snd_power_change_state(card->snd_card, SNDRV_CTL_POWER_D0); |
| } |
| |
| /* powers up audio subsystem after a suspend */ |
| int snd_soc_resume(struct device *dev) |
| { |
| struct snd_soc_card *card = dev_get_drvdata(dev); |
| int i, ac97_control = 0; |
| |
| /* AC97 devices might have other drivers hanging off them so |
| * need to resume immediately. Other drivers don't have that |
| * problem and may take a substantial amount of time to resume |
| * due to I/O costs and anti-pop so handle them out of line. |
| */ |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_dai *cpu_dai = card->rtd[i].cpu_dai; |
| ac97_control |= cpu_dai->driver->ac97_control; |
| } |
| if (ac97_control) { |
| dev_dbg(dev, "Resuming AC97 immediately\n"); |
| soc_resume_deferred(&card->deferred_resume_work); |
| } else { |
| dev_dbg(dev, "Scheduling resume work\n"); |
| if (!schedule_work(&card->deferred_resume_work)) |
| dev_err(dev, "resume work item may be lost\n"); |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_resume); |
| #else |
| #define snd_soc_suspend NULL |
| #define snd_soc_resume NULL |
| #endif |
| |
| static struct snd_soc_dai_ops null_dai_ops = { |
| }; |
| |
| static int soc_bind_dai_link(struct snd_soc_card *card, int num) |
| { |
| struct snd_soc_dai_link *dai_link = &card->dai_link[num]; |
| struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| struct snd_soc_codec *codec; |
| struct snd_soc_platform *platform; |
| struct snd_soc_dai *codec_dai, *cpu_dai; |
| const char *platform_name; |
| |
| if (rtd->complete) |
| return 1; |
| dev_dbg(card->dev, "binding %s at idx %d\n", dai_link->name, num); |
| |
| /* do we already have the CPU DAI for this link ? */ |
| if (rtd->cpu_dai) { |
| goto find_codec; |
| } |
| /* no, then find CPU DAI from registered DAIs*/ |
| list_for_each_entry(cpu_dai, &dai_list, list) { |
| if (!strcmp(cpu_dai->name, dai_link->cpu_dai_name)) { |
| rtd->cpu_dai = cpu_dai; |
| goto find_codec; |
| } |
| } |
| dev_dbg(card->dev, "CPU DAI %s not registered\n", |
| dai_link->cpu_dai_name); |
| |
| find_codec: |
| /* do we already have the CODEC for this link ? */ |
| if (rtd->codec) { |
| goto find_platform; |
| } |
| |
| /* no, then find CODEC from registered CODECs*/ |
| list_for_each_entry(codec, &codec_list, list) { |
| if (!strcmp(codec->name, dai_link->codec_name)) { |
| rtd->codec = codec; |
| |
| /* CODEC found, so find CODEC DAI from registered DAIs from this CODEC*/ |
| list_for_each_entry(codec_dai, &dai_list, list) { |
| if (codec->dev == codec_dai->dev && |
| !strcmp(codec_dai->name, dai_link->codec_dai_name)) { |
| rtd->codec_dai = codec_dai; |
| goto find_platform; |
| } |
| } |
| dev_dbg(card->dev, "CODEC DAI %s not registered\n", |
| dai_link->codec_dai_name); |
| |
| goto find_platform; |
| } |
| } |
| dev_dbg(card->dev, "CODEC %s not registered\n", |
| dai_link->codec_name); |
| |
| find_platform: |
| /* do we need a platform? */ |
| if (rtd->platform) |
| goto out; |
| |
| /* if there's no platform we match on the empty platform */ |
| platform_name = dai_link->platform_name; |
| if (!platform_name) |
| platform_name = "snd-soc-dummy"; |
| |
| /* no, then find one from the set of registered platforms */ |
| list_for_each_entry(platform, &platform_list, list) { |
| if (!strcmp(platform->name, platform_name)) { |
| rtd->platform = platform; |
| goto out; |
| } |
| } |
| |
| dev_dbg(card->dev, "platform %s not registered\n", |
| dai_link->platform_name); |
| return 0; |
| |
| out: |
| /* mark rtd as complete if we found all 4 of our client devices */ |
| if (rtd->codec && rtd->codec_dai && rtd->platform && rtd->cpu_dai) { |
| rtd->complete = 1; |
| card->num_rtd++; |
| } |
| return 1; |
| } |
| |
| static void soc_remove_codec(struct snd_soc_codec *codec) |
| { |
| int err; |
| |
| if (codec->driver->remove) { |
| err = codec->driver->remove(codec); |
| if (err < 0) |
| dev_err(codec->dev, |
| "asoc: failed to remove %s: %d\n", |
| codec->name, err); |
| } |
| |
| /* Make sure all DAPM widgets are freed */ |
| snd_soc_dapm_free(&codec->dapm); |
| |
| soc_cleanup_codec_debugfs(codec); |
| codec->probed = 0; |
| list_del(&codec->card_list); |
| module_put(codec->dev->driver->owner); |
| } |
| |
| static void soc_remove_dai_link(struct snd_soc_card *card, int num) |
| { |
| struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| struct snd_soc_codec *codec = rtd->codec; |
| struct snd_soc_platform *platform = rtd->platform; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai; |
| int err; |
| |
| /* unregister the rtd device */ |
| if (rtd->dev_registered) { |
| device_remove_file(&rtd->dev, &dev_attr_pmdown_time); |
| device_remove_file(&rtd->dev, &dev_attr_codec_reg); |
| device_unregister(&rtd->dev); |
| rtd->dev_registered = 0; |
| } |
| |
| /* remove the CODEC DAI */ |
| if (codec_dai && codec_dai->probed) { |
| if (codec_dai->driver->remove) { |
| err = codec_dai->driver->remove(codec_dai); |
| if (err < 0) |
| printk(KERN_ERR "asoc: failed to remove %s\n", codec_dai->name); |
| } |
| codec_dai->probed = 0; |
| list_del(&codec_dai->card_list); |
| } |
| |
| /* remove the platform */ |
| if (platform && platform->probed) { |
| if (platform->driver->remove) { |
| err = platform->driver->remove(platform); |
| if (err < 0) |
| printk(KERN_ERR "asoc: failed to remove %s\n", platform->name); |
| } |
| platform->probed = 0; |
| list_del(&platform->card_list); |
| module_put(platform->dev->driver->owner); |
| } |
| |
| /* remove the CODEC */ |
| if (codec && codec->probed) |
| soc_remove_codec(codec); |
| |
| /* remove the cpu_dai */ |
| if (cpu_dai && cpu_dai->probed) { |
| if (cpu_dai->driver->remove) { |
| err = cpu_dai->driver->remove(cpu_dai); |
| if (err < 0) |
| printk(KERN_ERR "asoc: failed to remove %s\n", cpu_dai->name); |
| } |
| cpu_dai->probed = 0; |
| list_del(&cpu_dai->card_list); |
| module_put(cpu_dai->dev->driver->owner); |
| } |
| } |
| |
| static void soc_remove_dai_links(struct snd_soc_card *card) |
| { |
| int i; |
| |
| for (i = 0; i < card->num_rtd; i++) |
| soc_remove_dai_link(card, i); |
| |
| card->num_rtd = 0; |
| } |
| |
| static void soc_set_name_prefix(struct snd_soc_card *card, |
| struct snd_soc_codec *codec) |
| { |
| int i; |
| |
| if (card->codec_conf == NULL) |
| return; |
| |
| for (i = 0; i < card->num_configs; i++) { |
| struct snd_soc_codec_conf *map = &card->codec_conf[i]; |
| if (map->dev_name && !strcmp(codec->name, map->dev_name)) { |
| codec->name_prefix = map->name_prefix; |
| break; |
| } |
| } |
| } |
| |
| static int soc_probe_codec(struct snd_soc_card *card, |
| struct snd_soc_codec *codec) |
| { |
| int ret = 0; |
| const struct snd_soc_codec_driver *driver = codec->driver; |
| |
| codec->card = card; |
| codec->dapm.card = card; |
| soc_set_name_prefix(card, codec); |
| |
| if (!try_module_get(codec->dev->driver->owner)) |
| return -ENODEV; |
| |
| soc_init_codec_debugfs(codec); |
| |
| if (driver->dapm_widgets) |
| snd_soc_dapm_new_controls(&codec->dapm, driver->dapm_widgets, |
| driver->num_dapm_widgets); |
| |
| if (driver->probe) { |
| ret = driver->probe(codec); |
| if (ret < 0) { |
| dev_err(codec->dev, |
| "asoc: failed to probe CODEC %s: %d\n", |
| codec->name, ret); |
| goto err_probe; |
| } |
| } |
| |
| if (driver->controls) |
| snd_soc_add_controls(codec, driver->controls, |
| driver->num_controls); |
| if (driver->dapm_routes) |
| snd_soc_dapm_add_routes(&codec->dapm, driver->dapm_routes, |
| driver->num_dapm_routes); |
| |
| /* mark codec as probed and add to card codec list */ |
| codec->probed = 1; |
| list_add(&codec->card_list, &card->codec_dev_list); |
| list_add(&codec->dapm.list, &card->dapm_list); |
| |
| return 0; |
| |
| err_probe: |
| soc_cleanup_codec_debugfs(codec); |
| module_put(codec->dev->driver->owner); |
| |
| return ret; |
| } |
| |
| static void rtd_release(struct device *dev) {} |
| |
| static int soc_post_component_init(struct snd_soc_card *card, |
| struct snd_soc_codec *codec, |
| int num, int dailess) |
| { |
| struct snd_soc_dai_link *dai_link = NULL; |
| struct snd_soc_aux_dev *aux_dev = NULL; |
| struct snd_soc_pcm_runtime *rtd; |
| const char *temp, *name; |
| int ret = 0; |
| |
| if (!dailess) { |
| dai_link = &card->dai_link[num]; |
| rtd = &card->rtd[num]; |
| name = dai_link->name; |
| } else { |
| aux_dev = &card->aux_dev[num]; |
| rtd = &card->rtd_aux[num]; |
| name = aux_dev->name; |
| } |
| rtd->card = card; |
| |
| /* machine controls, routes and widgets are not prefixed */ |
| temp = codec->name_prefix; |
| codec->name_prefix = NULL; |
| |
| /* do machine specific initialization */ |
| if (!dailess && dai_link->init) |
| ret = dai_link->init(rtd); |
| else if (dailess && aux_dev->init) |
| ret = aux_dev->init(&codec->dapm); |
| if (ret < 0) { |
| dev_err(card->dev, "asoc: failed to init %s: %d\n", name, ret); |
| return ret; |
| } |
| codec->name_prefix = temp; |
| |
| /* Make sure all DAPM widgets are instantiated */ |
| snd_soc_dapm_new_widgets(&codec->dapm); |
| |
| /* register the rtd device */ |
| rtd->codec = codec; |
| rtd->dev.parent = card->dev; |
| rtd->dev.release = rtd_release; |
| rtd->dev.init_name = name; |
| ret = device_register(&rtd->dev); |
| if (ret < 0) { |
| dev_err(card->dev, |
| "asoc: failed to register runtime device: %d\n", ret); |
| return ret; |
| } |
| rtd->dev_registered = 1; |
| |
| /* add DAPM sysfs entries for this codec */ |
| ret = snd_soc_dapm_sys_add(&rtd->dev); |
| if (ret < 0) |
| dev_err(codec->dev, |
| "asoc: failed to add codec dapm sysfs entries: %d\n", |
| ret); |
| |
| /* add codec sysfs entries */ |
| ret = device_create_file(&rtd->dev, &dev_attr_codec_reg); |
| if (ret < 0) |
| dev_err(codec->dev, |
| "asoc: failed to add codec sysfs files: %d\n", ret); |
| |
| return 0; |
| } |
| |
| static int soc_probe_dai_link(struct snd_soc_card *card, int num) |
| { |
| struct snd_soc_dai_link *dai_link = &card->dai_link[num]; |
| struct snd_soc_pcm_runtime *rtd = &card->rtd[num]; |
| struct snd_soc_codec *codec = rtd->codec; |
| struct snd_soc_platform *platform = rtd->platform; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai, *cpu_dai = rtd->cpu_dai; |
| int ret; |
| |
| dev_dbg(card->dev, "probe %s dai link %d\n", card->name, num); |
| |
| /* config components */ |
| codec_dai->codec = codec; |
| cpu_dai->platform = platform; |
| codec_dai->card = card; |
| cpu_dai->card = card; |
| |
| /* set default power off timeout */ |
| rtd->pmdown_time = pmdown_time; |
| |
| /* probe the cpu_dai */ |
| if (!cpu_dai->probed) { |
| if (!try_module_get(cpu_dai->dev->driver->owner)) |
| return -ENODEV; |
| |
| if (cpu_dai->driver->probe) { |
| ret = cpu_dai->driver->probe(cpu_dai); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: failed to probe CPU DAI %s\n", |
| cpu_dai->name); |
| module_put(cpu_dai->dev->driver->owner); |
| return ret; |
| } |
| } |
| cpu_dai->probed = 1; |
| /* mark cpu_dai as probed and add to card cpu_dai list */ |
| list_add(&cpu_dai->card_list, &card->dai_dev_list); |
| } |
| |
| /* probe the CODEC */ |
| if (!codec->probed) { |
| ret = soc_probe_codec(card, codec); |
| if (ret < 0) |
| return ret; |
| } |
| |
| /* probe the platform */ |
| if (!platform->probed) { |
| if (!try_module_get(platform->dev->driver->owner)) |
| return -ENODEV; |
| |
| if (platform->driver->probe) { |
| ret = platform->driver->probe(platform); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: failed to probe platform %s\n", |
| platform->name); |
| module_put(platform->dev->driver->owner); |
| return ret; |
| } |
| } |
| /* mark platform as probed and add to card platform list */ |
| platform->probed = 1; |
| list_add(&platform->card_list, &card->platform_dev_list); |
| } |
| |
| /* probe the CODEC DAI */ |
| if (!codec_dai->probed) { |
| if (codec_dai->driver->probe) { |
| ret = codec_dai->driver->probe(codec_dai); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: failed to probe CODEC DAI %s\n", |
| codec_dai->name); |
| return ret; |
| } |
| } |
| |
| /* mark cpu_dai as probed and add to card cpu_dai list */ |
| codec_dai->probed = 1; |
| list_add(&codec_dai->card_list, &card->dai_dev_list); |
| } |
| |
| /* DAPM dai link stream work */ |
| INIT_DELAYED_WORK(&rtd->delayed_work, close_delayed_work); |
| |
| ret = soc_post_component_init(card, codec, num, 0); |
| if (ret) |
| return ret; |
| |
| ret = device_create_file(&rtd->dev, &dev_attr_pmdown_time); |
| if (ret < 0) |
| printk(KERN_WARNING "asoc: failed to add pmdown_time sysfs\n"); |
| |
| /* create the pcm */ |
| ret = soc_new_pcm(rtd, num); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: can't create pcm %s\n", dai_link->stream_name); |
| return ret; |
| } |
| |
| /* add platform data for AC97 devices */ |
| if (rtd->codec_dai->driver->ac97_control) |
| snd_ac97_dev_add_pdata(codec->ac97, rtd->cpu_dai->ac97_pdata); |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_SND_SOC_AC97_BUS |
| static int soc_register_ac97_dai_link(struct snd_soc_pcm_runtime *rtd) |
| { |
| int ret; |
| |
| /* Only instantiate AC97 if not already done by the adaptor |
| * for the generic AC97 subsystem. |
| */ |
| if (rtd->codec_dai->driver->ac97_control && !rtd->codec->ac97_registered) { |
| /* |
| * It is possible that the AC97 device is already registered to |
| * the device subsystem. This happens when the device is created |
| * via snd_ac97_mixer(). Currently only SoC codec that does so |
| * is the generic AC97 glue but others migh emerge. |
| * |
| * In those cases we don't try to register the device again. |
| */ |
| if (!rtd->codec->ac97_created) |
| return 0; |
| |
| ret = soc_ac97_dev_register(rtd->codec); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: AC97 device register failed\n"); |
| return ret; |
| } |
| |
| rtd->codec->ac97_registered = 1; |
| } |
| return 0; |
| } |
| |
| static void soc_unregister_ac97_dai_link(struct snd_soc_codec *codec) |
| { |
| if (codec->ac97_registered) { |
| soc_ac97_dev_unregister(codec); |
| codec->ac97_registered = 0; |
| } |
| } |
| #endif |
| |
| static int soc_probe_aux_dev(struct snd_soc_card *card, int num) |
| { |
| struct snd_soc_aux_dev *aux_dev = &card->aux_dev[num]; |
| struct snd_soc_codec *codec; |
| int ret = -ENODEV; |
| |
| /* find CODEC from registered CODECs*/ |
| list_for_each_entry(codec, &codec_list, list) { |
| if (!strcmp(codec->name, aux_dev->codec_name)) { |
| if (codec->probed) { |
| dev_err(codec->dev, |
| "asoc: codec already probed"); |
| ret = -EBUSY; |
| goto out; |
| } |
| goto found; |
| } |
| } |
| /* codec not found */ |
| dev_err(card->dev, "asoc: codec %s not found", aux_dev->codec_name); |
| goto out; |
| |
| found: |
| ret = soc_probe_codec(card, codec); |
| if (ret < 0) |
| return ret; |
| |
| ret = soc_post_component_init(card, codec, num, 1); |
| |
| out: |
| return ret; |
| } |
| |
| static void soc_remove_aux_dev(struct snd_soc_card *card, int num) |
| { |
| struct snd_soc_pcm_runtime *rtd = &card->rtd_aux[num]; |
| struct snd_soc_codec *codec = rtd->codec; |
| |
| /* unregister the rtd device */ |
| if (rtd->dev_registered) { |
| device_remove_file(&rtd->dev, &dev_attr_codec_reg); |
| device_unregister(&rtd->dev); |
| rtd->dev_registered = 0; |
| } |
| |
| if (codec && codec->probed) |
| soc_remove_codec(codec); |
| } |
| |
| static int snd_soc_init_codec_cache(struct snd_soc_codec *codec, |
| enum snd_soc_compress_type compress_type) |
| { |
| int ret; |
| |
| if (codec->cache_init) |
| return 0; |
| |
| /* override the compress_type if necessary */ |
| if (compress_type && codec->compress_type != compress_type) |
| codec->compress_type = compress_type; |
| ret = snd_soc_cache_init(codec); |
| if (ret < 0) { |
| dev_err(codec->dev, "Failed to set cache compression type: %d\n", |
| ret); |
| return ret; |
| } |
| codec->cache_init = 1; |
| return 0; |
| } |
| |
| static void snd_soc_instantiate_card(struct snd_soc_card *card) |
| { |
| struct snd_soc_codec *codec; |
| struct snd_soc_codec_conf *codec_conf; |
| enum snd_soc_compress_type compress_type; |
| int ret, i; |
| |
| mutex_lock(&card->mutex); |
| |
| if (card->instantiated) { |
| mutex_unlock(&card->mutex); |
| return; |
| } |
| |
| /* bind DAIs */ |
| for (i = 0; i < card->num_links; i++) |
| soc_bind_dai_link(card, i); |
| |
| /* bind completed ? */ |
| if (card->num_rtd != card->num_links) { |
| mutex_unlock(&card->mutex); |
| return; |
| } |
| |
| /* initialize the register cache for each available codec */ |
| list_for_each_entry(codec, &codec_list, list) { |
| if (codec->cache_init) |
| continue; |
| /* by default we don't override the compress_type */ |
| compress_type = 0; |
| /* check to see if we need to override the compress_type */ |
| for (i = 0; i < card->num_configs; ++i) { |
| codec_conf = &card->codec_conf[i]; |
| if (!strcmp(codec->name, codec_conf->dev_name)) { |
| compress_type = codec_conf->compress_type; |
| if (compress_type && compress_type |
| != codec->compress_type) |
| break; |
| } |
| } |
| ret = snd_soc_init_codec_cache(codec, compress_type); |
| if (ret < 0) { |
| mutex_unlock(&card->mutex); |
| return; |
| } |
| } |
| |
| /* card bind complete so register a sound card */ |
| ret = snd_card_create(SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1, |
| card->owner, 0, &card->snd_card); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: can't create sound card for card %s\n", |
| card->name); |
| mutex_unlock(&card->mutex); |
| return; |
| } |
| card->snd_card->dev = card->dev; |
| |
| card->dapm.bias_level = SND_SOC_BIAS_OFF; |
| card->dapm.dev = card->dev; |
| card->dapm.card = card; |
| list_add(&card->dapm.list, &card->dapm_list); |
| |
| #ifdef CONFIG_DEBUG_FS |
| snd_soc_dapm_debugfs_init(&card->dapm, card->debugfs_card_root); |
| #endif |
| |
| #ifdef CONFIG_PM_SLEEP |
| /* deferred resume work */ |
| INIT_WORK(&card->deferred_resume_work, soc_resume_deferred); |
| #endif |
| |
| if (card->dapm_widgets) |
| snd_soc_dapm_new_controls(&card->dapm, card->dapm_widgets, |
| card->num_dapm_widgets); |
| |
| /* initialise the sound card only once */ |
| if (card->probe) { |
| ret = card->probe(card); |
| if (ret < 0) |
| goto card_probe_error; |
| } |
| |
| for (i = 0; i < card->num_links; i++) { |
| ret = soc_probe_dai_link(card, i); |
| if (ret < 0) { |
| pr_err("asoc: failed to instantiate card %s: %d\n", |
| card->name, ret); |
| goto probe_dai_err; |
| } |
| } |
| |
| for (i = 0; i < card->num_aux_devs; i++) { |
| ret = soc_probe_aux_dev(card, i); |
| if (ret < 0) { |
| pr_err("asoc: failed to add auxiliary devices %s: %d\n", |
| card->name, ret); |
| goto probe_aux_dev_err; |
| } |
| } |
| |
| /* We should have a non-codec control add function but we don't */ |
| if (card->controls) |
| snd_soc_add_controls(list_first_entry(&card->codec_dev_list, |
| struct snd_soc_codec, |
| card_list), |
| card->controls, |
| card->num_controls); |
| |
| if (card->dapm_routes) |
| snd_soc_dapm_add_routes(&card->dapm, card->dapm_routes, |
| card->num_dapm_routes); |
| |
| snprintf(card->snd_card->shortname, sizeof(card->snd_card->shortname), |
| "%s", card->name); |
| snprintf(card->snd_card->longname, sizeof(card->snd_card->longname), |
| "%s", card->long_name ? card->long_name : card->name); |
| snprintf(card->snd_card->driver, sizeof(card->snd_card->driver), |
| "%s", card->driver_name ? card->driver_name : card->name); |
| for (i = 0; i < ARRAY_SIZE(card->snd_card->driver); i++) { |
| switch (card->snd_card->driver[i]) { |
| case '_': |
| case '-': |
| case '\0': |
| break; |
| default: |
| if (!isalnum(card->snd_card->driver[i])) |
| card->snd_card->driver[i] = '_'; |
| break; |
| } |
| } |
| |
| if (card->late_probe) { |
| ret = card->late_probe(card); |
| if (ret < 0) { |
| dev_err(card->dev, "%s late_probe() failed: %d\n", |
| card->name, ret); |
| goto probe_aux_dev_err; |
| } |
| } |
| |
| ret = snd_card_register(card->snd_card); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: failed to register soundcard for %s\n", card->name); |
| goto probe_aux_dev_err; |
| } |
| |
| #ifdef CONFIG_SND_SOC_AC97_BUS |
| /* register any AC97 codecs */ |
| for (i = 0; i < card->num_rtd; i++) { |
| ret = soc_register_ac97_dai_link(&card->rtd[i]); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: failed to register AC97 %s\n", card->name); |
| while (--i >= 0) |
| soc_unregister_ac97_dai_link(card->rtd[i].codec); |
| goto probe_aux_dev_err; |
| } |
| } |
| #endif |
| |
| card->instantiated = 1; |
| mutex_unlock(&card->mutex); |
| return; |
| |
| probe_aux_dev_err: |
| for (i = 0; i < card->num_aux_devs; i++) |
| soc_remove_aux_dev(card, i); |
| |
| probe_dai_err: |
| soc_remove_dai_links(card); |
| |
| card_probe_error: |
| if (card->remove) |
| card->remove(card); |
| |
| snd_card_free(card->snd_card); |
| |
| mutex_unlock(&card->mutex); |
| } |
| |
| /* |
| * Attempt to initialise any uninitialised cards. Must be called with |
| * client_mutex. |
| */ |
| static void snd_soc_instantiate_cards(void) |
| { |
| struct snd_soc_card *card; |
| list_for_each_entry(card, &card_list, list) |
| snd_soc_instantiate_card(card); |
| } |
| |
| /* probes a new socdev */ |
| static int soc_probe(struct platform_device *pdev) |
| { |
| struct snd_soc_card *card = platform_get_drvdata(pdev); |
| int ret = 0; |
| |
| /* |
| * no card, so machine driver should be registering card |
| * we should not be here in that case so ret error |
| */ |
| if (!card) |
| return -EINVAL; |
| |
| /* Bodge while we unpick instantiation */ |
| card->dev = &pdev->dev; |
| |
| ret = snd_soc_register_card(card); |
| if (ret != 0) { |
| dev_err(&pdev->dev, "Failed to register card\n"); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int soc_cleanup_card_resources(struct snd_soc_card *card) |
| { |
| int i; |
| |
| /* make sure any delayed work runs */ |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; |
| flush_delayed_work_sync(&rtd->delayed_work); |
| } |
| |
| /* remove auxiliary devices */ |
| for (i = 0; i < card->num_aux_devs; i++) |
| soc_remove_aux_dev(card, i); |
| |
| /* remove and free each DAI */ |
| soc_remove_dai_links(card); |
| |
| soc_cleanup_card_debugfs(card); |
| |
| /* remove the card */ |
| if (card->remove) |
| card->remove(card); |
| |
| snd_soc_dapm_free(&card->dapm); |
| |
| kfree(card->rtd); |
| snd_card_free(card->snd_card); |
| return 0; |
| |
| } |
| |
| /* removes a socdev */ |
| static int soc_remove(struct platform_device *pdev) |
| { |
| struct snd_soc_card *card = platform_get_drvdata(pdev); |
| |
| snd_soc_unregister_card(card); |
| return 0; |
| } |
| |
| int snd_soc_poweroff(struct device *dev) |
| { |
| struct snd_soc_card *card = dev_get_drvdata(dev); |
| int i; |
| |
| if (!card->instantiated) |
| return 0; |
| |
| /* Flush out pmdown_time work - we actually do want to run it |
| * now, we're shutting down so no imminent restart. */ |
| for (i = 0; i < card->num_rtd; i++) { |
| struct snd_soc_pcm_runtime *rtd = &card->rtd[i]; |
| flush_delayed_work_sync(&rtd->delayed_work); |
| } |
| |
| snd_soc_dapm_shutdown(card); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_poweroff); |
| |
| const struct dev_pm_ops snd_soc_pm_ops = { |
| .suspend = snd_soc_suspend, |
| .resume = snd_soc_resume, |
| .poweroff = snd_soc_poweroff, |
| }; |
| EXPORT_SYMBOL_GPL(snd_soc_pm_ops); |
| |
| /* ASoC platform driver */ |
| static struct platform_driver soc_driver = { |
| .driver = { |
| .name = "soc-audio", |
| .owner = THIS_MODULE, |
| .pm = &snd_soc_pm_ops, |
| }, |
| .probe = soc_probe, |
| .remove = soc_remove, |
| }; |
| |
| /* create a new pcm */ |
| static int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) |
| { |
| struct snd_soc_codec *codec = rtd->codec; |
| struct snd_soc_platform *platform = rtd->platform; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| struct snd_pcm *pcm; |
| char new_name[64]; |
| int ret = 0, playback = 0, capture = 0; |
| |
| /* check client and interface hw capabilities */ |
| snprintf(new_name, sizeof(new_name), "%s %s-%d", |
| rtd->dai_link->stream_name, codec_dai->name, num); |
| |
| if (codec_dai->driver->playback.channels_min) |
| playback = 1; |
| if (codec_dai->driver->capture.channels_min) |
| capture = 1; |
| |
| dev_dbg(rtd->card->dev, "registered pcm #%d %s\n",num,new_name); |
| ret = snd_pcm_new(rtd->card->snd_card, new_name, |
| num, playback, capture, &pcm); |
| if (ret < 0) { |
| printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name); |
| return ret; |
| } |
| |
| rtd->pcm = pcm; |
| pcm->private_data = rtd; |
| if (platform->driver->ops) { |
| soc_pcm_ops.mmap = platform->driver->ops->mmap; |
| soc_pcm_ops.pointer = platform->driver->ops->pointer; |
| soc_pcm_ops.ioctl = platform->driver->ops->ioctl; |
| soc_pcm_ops.copy = platform->driver->ops->copy; |
| soc_pcm_ops.silence = platform->driver->ops->silence; |
| soc_pcm_ops.ack = platform->driver->ops->ack; |
| soc_pcm_ops.page = platform->driver->ops->page; |
| } |
| |
| if (playback) |
| snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); |
| |
| if (capture) |
| snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); |
| |
| if (platform->driver->pcm_new) { |
| ret = platform->driver->pcm_new(rtd->card->snd_card, |
| codec_dai, pcm); |
| if (ret < 0) { |
| pr_err("asoc: platform pcm constructor failed\n"); |
| return ret; |
| } |
| } |
| |
| pcm->private_free = platform->driver->pcm_free; |
| printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, |
| cpu_dai->name); |
| return ret; |
| } |
| |
| /** |
| * snd_soc_codec_volatile_register: Report if a register is volatile. |
| * |
| * @codec: CODEC to query. |
| * @reg: Register to query. |
| * |
| * Boolean function indiciating if a CODEC register is volatile. |
| */ |
| int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, |
| unsigned int reg) |
| { |
| if (codec->volatile_register) |
| return codec->volatile_register(codec, reg); |
| else |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_codec_volatile_register); |
| |
| /** |
| * snd_soc_codec_readable_register: Report if a register is readable. |
| * |
| * @codec: CODEC to query. |
| * @reg: Register to query. |
| * |
| * Boolean function indicating if a CODEC register is readable. |
| */ |
| int snd_soc_codec_readable_register(struct snd_soc_codec *codec, |
| unsigned int reg) |
| { |
| if (codec->readable_register) |
| return codec->readable_register(codec, reg); |
| else |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_codec_readable_register); |
| |
| /** |
| * snd_soc_codec_writable_register: Report if a register is writable. |
| * |
| * @codec: CODEC to query. |
| * @reg: Register to query. |
| * |
| * Boolean function indicating if a CODEC register is writable. |
| */ |
| int snd_soc_codec_writable_register(struct snd_soc_codec *codec, |
| unsigned int reg) |
| { |
| if (codec->writable_register) |
| return codec->writable_register(codec, reg); |
| else |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_codec_writable_register); |
| |
| /** |
| * snd_soc_new_ac97_codec - initailise AC97 device |
| * @codec: audio codec |
| * @ops: AC97 bus operations |
| * @num: AC97 codec number |
| * |
| * Initialises AC97 codec resources for use by ad-hoc devices only. |
| */ |
| int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, |
| struct snd_ac97_bus_ops *ops, int num) |
| { |
| mutex_lock(&codec->mutex); |
| |
| codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); |
| if (codec->ac97 == NULL) { |
| mutex_unlock(&codec->mutex); |
| return -ENOMEM; |
| } |
| |
| codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); |
| if (codec->ac97->bus == NULL) { |
| kfree(codec->ac97); |
| codec->ac97 = NULL; |
| mutex_unlock(&codec->mutex); |
| return -ENOMEM; |
| } |
| |
| codec->ac97->bus->ops = ops; |
| codec->ac97->num = num; |
| |
| /* |
| * Mark the AC97 device to be created by us. This way we ensure that the |
| * device will be registered with the device subsystem later on. |
| */ |
| codec->ac97_created = 1; |
| |
| mutex_unlock(&codec->mutex); |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); |
| |
| /** |
| * snd_soc_free_ac97_codec - free AC97 codec device |
| * @codec: audio codec |
| * |
| * Frees AC97 codec device resources. |
| */ |
| void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) |
| { |
| mutex_lock(&codec->mutex); |
| #ifdef CONFIG_SND_SOC_AC97_BUS |
| soc_unregister_ac97_dai_link(codec); |
| #endif |
| kfree(codec->ac97->bus); |
| kfree(codec->ac97); |
| codec->ac97 = NULL; |
| codec->ac97_created = 0; |
| mutex_unlock(&codec->mutex); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); |
| |
| unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg) |
| { |
| unsigned int ret; |
| |
| ret = codec->read(codec, reg); |
| dev_dbg(codec->dev, "read %x => %x\n", reg, ret); |
| trace_snd_soc_reg_read(codec, reg, ret); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_read); |
| |
| unsigned int snd_soc_write(struct snd_soc_codec *codec, |
| unsigned int reg, unsigned int val) |
| { |
| dev_dbg(codec->dev, "write %x = %x\n", reg, val); |
| trace_snd_soc_reg_write(codec, reg, val); |
| return codec->write(codec, reg, val); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_write); |
| |
| unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec, |
| unsigned int reg, const void *data, size_t len) |
| { |
| return codec->bulk_write_raw(codec, reg, data, len); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_bulk_write_raw); |
| |
| /** |
| * snd_soc_update_bits - update codec register bits |
| * @codec: audio codec |
| * @reg: codec register |
| * @mask: register mask |
| * @value: new value |
| * |
| * Writes new register value. |
| * |
| * Returns 1 for change, 0 for no change, or negative error code. |
| */ |
| int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, |
| unsigned int mask, unsigned int value) |
| { |
| int change; |
| unsigned int old, new; |
| int ret; |
| |
| ret = snd_soc_read(codec, reg); |
| if (ret < 0) |
| return ret; |
| |
| old = ret; |
| new = (old & ~mask) | value; |
| change = old != new; |
| if (change) { |
| ret = snd_soc_write(codec, reg, new); |
| if (ret < 0) |
| return ret; |
| } |
| |
| return change; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_update_bits); |
| |
| /** |
| * snd_soc_update_bits_locked - update codec register bits |
| * @codec: audio codec |
| * @reg: codec register |
| * @mask: register mask |
| * @value: new value |
| * |
| * Writes new register value, and takes the codec mutex. |
| * |
| * Returns 1 for change else 0. |
| */ |
| int snd_soc_update_bits_locked(struct snd_soc_codec *codec, |
| unsigned short reg, unsigned int mask, |
| unsigned int value) |
| { |
| int change; |
| |
| mutex_lock(&codec->mutex); |
| change = snd_soc_update_bits(codec, reg, mask, value); |
| mutex_unlock(&codec->mutex); |
| |
| return change; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked); |
| |
| /** |
| * snd_soc_test_bits - test register for change |
| * @codec: audio codec |
| * @reg: codec register |
| * @mask: register mask |
| * @value: new value |
| * |
| * Tests a register with a new value and checks if the new value is |
| * different from the old value. |
| * |
| * Returns 1 for change else 0. |
| */ |
| int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, |
| unsigned int mask, unsigned int value) |
| { |
| int change; |
| unsigned int old, new; |
| |
| old = snd_soc_read(codec, reg); |
| new = (old & ~mask) | value; |
| change = old != new; |
| |
| return change; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_test_bits); |
| |
| /** |
| * snd_soc_set_runtime_hwparams - set the runtime hardware parameters |
| * @substream: the pcm substream |
| * @hw: the hardware parameters |
| * |
| * Sets the substream runtime hardware parameters. |
| */ |
| int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, |
| const struct snd_pcm_hardware *hw) |
| { |
| struct snd_pcm_runtime *runtime = substream->runtime; |
| runtime->hw.info = hw->info; |
| runtime->hw.formats = hw->formats; |
| runtime->hw.period_bytes_min = hw->period_bytes_min; |
| runtime->hw.period_bytes_max = hw->period_bytes_max; |
| runtime->hw.periods_min = hw->periods_min; |
| runtime->hw.periods_max = hw->periods_max; |
| runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; |
| runtime->hw.fifo_size = hw->fifo_size; |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); |
| |
| /** |
| * snd_soc_cnew - create new control |
| * @_template: control template |
| * @data: control private data |
| * @long_name: control long name |
| * @prefix: control name prefix |
| * |
| * Create a new mixer control from a template control. |
| * |
| * Returns 0 for success, else error. |
| */ |
| struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, |
| void *data, char *long_name, |
| const char *prefix) |
| { |
| struct snd_kcontrol_new template; |
| struct snd_kcontrol *kcontrol; |
| char *name = NULL; |
| int name_len; |
| |
| memcpy(&template, _template, sizeof(template)); |
| template.index = 0; |
| |
| if (!long_name) |
| long_name = template.name; |
| |
| if (prefix) { |
| name_len = strlen(long_name) + strlen(prefix) + 2; |
| name = kmalloc(name_len, GFP_ATOMIC); |
| if (!name) |
| return NULL; |
| |
| snprintf(name, name_len, "%s %s", prefix, long_name); |
| |
| template.name = name; |
| } else { |
| template.name = long_name; |
| } |
| |
| kcontrol = snd_ctl_new1(&template, data); |
| |
| kfree(name); |
| |
| return kcontrol; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_cnew); |
| |
| /** |
| * snd_soc_add_controls - add an array of controls to a codec. |
| * Convienience function to add a list of controls. Many codecs were |
| * duplicating this code. |
| * |
| * @codec: codec to add controls to |
| * @controls: array of controls to add |
| * @num_controls: number of elements in the array |
| * |
| * Return 0 for success, else error. |
| */ |
| int snd_soc_add_controls(struct snd_soc_codec *codec, |
| const struct snd_kcontrol_new *controls, int num_controls) |
| { |
| struct snd_card *card = codec->card->snd_card; |
| int err, i; |
| |
| for (i = 0; i < num_controls; i++) { |
| const struct snd_kcontrol_new *control = &controls[i]; |
| err = snd_ctl_add(card, snd_soc_cnew(control, codec, |
| control->name, |
| codec->name_prefix)); |
| if (err < 0) { |
| dev_err(codec->dev, "%s: Failed to add %s: %d\n", |
| codec->name, control->name, err); |
| return err; |
| } |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_add_controls); |
| |
| /** |
| * snd_soc_info_enum_double - enumerated double mixer info callback |
| * @kcontrol: mixer control |
| * @uinfo: control element information |
| * |
| * Callback to provide information about a double enumerated |
| * mixer control. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_info *uinfo) |
| { |
| struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; |
| uinfo->count = e->shift_l == e->shift_r ? 1 : 2; |
| uinfo->value.enumerated.items = e->max; |
| |
| if (uinfo->value.enumerated.item > e->max - 1) |
| uinfo->value.enumerated.item = e->max - 1; |
| strcpy(uinfo->value.enumerated.name, |
| e->texts[uinfo->value.enumerated.item]); |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); |
| |
| /** |
| * snd_soc_get_enum_double - enumerated double mixer get callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to get the value of a double enumerated mixer. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| unsigned int val, bitmask; |
| |
| for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
| ; |
| val = snd_soc_read(codec, e->reg); |
| ucontrol->value.enumerated.item[0] |
| = (val >> e->shift_l) & (bitmask - 1); |
| if (e->shift_l != e->shift_r) |
| ucontrol->value.enumerated.item[1] = |
| (val >> e->shift_r) & (bitmask - 1); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); |
| |
| /** |
| * snd_soc_put_enum_double - enumerated double mixer put callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to set the value of a double enumerated mixer. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| unsigned int val; |
| unsigned int mask, bitmask; |
| |
| for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
| ; |
| if (ucontrol->value.enumerated.item[0] > e->max - 1) |
| return -EINVAL; |
| val = ucontrol->value.enumerated.item[0] << e->shift_l; |
| mask = (bitmask - 1) << e->shift_l; |
| if (e->shift_l != e->shift_r) { |
| if (ucontrol->value.enumerated.item[1] > e->max - 1) |
| return -EINVAL; |
| val |= ucontrol->value.enumerated.item[1] << e->shift_r; |
| mask |= (bitmask - 1) << e->shift_r; |
| } |
| |
| return snd_soc_update_bits_locked(codec, e->reg, mask, val); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); |
| |
| /** |
| * snd_soc_get_value_enum_double - semi enumerated double mixer get callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to get the value of a double semi enumerated mixer. |
| * |
| * Semi enumerated mixer: the enumerated items are referred as values. Can be |
| * used for handling bitfield coded enumeration for example. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| unsigned int reg_val, val, mux; |
| |
| reg_val = snd_soc_read(codec, e->reg); |
| val = (reg_val >> e->shift_l) & e->mask; |
| for (mux = 0; mux < e->max; mux++) { |
| if (val == e->values[mux]) |
| break; |
| } |
| ucontrol->value.enumerated.item[0] = mux; |
| if (e->shift_l != e->shift_r) { |
| val = (reg_val >> e->shift_r) & e->mask; |
| for (mux = 0; mux < e->max; mux++) { |
| if (val == e->values[mux]) |
| break; |
| } |
| ucontrol->value.enumerated.item[1] = mux; |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_double); |
| |
| /** |
| * snd_soc_put_value_enum_double - semi enumerated double mixer put callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to set the value of a double semi enumerated mixer. |
| * |
| * Semi enumerated mixer: the enumerated items are referred as values. Can be |
| * used for handling bitfield coded enumeration for example. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| unsigned int val; |
| unsigned int mask; |
| |
| if (ucontrol->value.enumerated.item[0] > e->max - 1) |
| return -EINVAL; |
| val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; |
| mask = e->mask << e->shift_l; |
| if (e->shift_l != e->shift_r) { |
| if (ucontrol->value.enumerated.item[1] > e->max - 1) |
| return -EINVAL; |
| val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; |
| mask |= e->mask << e->shift_r; |
| } |
| |
| return snd_soc_update_bits_locked(codec, e->reg, mask, val); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double); |
| |
| /** |
| * snd_soc_info_enum_ext - external enumerated single mixer info callback |
| * @kcontrol: mixer control |
| * @uinfo: control element information |
| * |
| * Callback to provide information about an external enumerated |
| * single mixer. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_info *uinfo) |
| { |
| struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
| |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; |
| uinfo->count = 1; |
| uinfo->value.enumerated.items = e->max; |
| |
| if (uinfo->value.enumerated.item > e->max - 1) |
| uinfo->value.enumerated.item = e->max - 1; |
| strcpy(uinfo->value.enumerated.name, |
| e->texts[uinfo->value.enumerated.item]); |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); |
| |
| /** |
| * snd_soc_info_volsw_ext - external single mixer info callback |
| * @kcontrol: mixer control |
| * @uinfo: control element information |
| * |
| * Callback to provide information about a single external mixer control. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_info *uinfo) |
| { |
| int max = kcontrol->private_value; |
| |
| if (max == 1 && !strstr(kcontrol->id.name, " Volume")) |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
| else |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| |
| uinfo->count = 1; |
| uinfo->value.integer.min = 0; |
| uinfo->value.integer.max = max; |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); |
| |
| /** |
| * snd_soc_info_volsw - single mixer info callback |
| * @kcontrol: mixer control |
| * @uinfo: control element information |
| * |
| * Callback to provide information about a single mixer control. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_info *uinfo) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| int platform_max; |
| unsigned int shift = mc->shift; |
| unsigned int rshift = mc->rshift; |
| |
| if (!mc->platform_max) |
| mc->platform_max = mc->max; |
| platform_max = mc->platform_max; |
| |
| if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume")) |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
| else |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| |
| uinfo->count = shift == rshift ? 1 : 2; |
| uinfo->value.integer.min = 0; |
| uinfo->value.integer.max = platform_max; |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_info_volsw); |
| |
| /** |
| * snd_soc_get_volsw - single mixer get callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to get the value of a single mixer control. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| unsigned int reg = mc->reg; |
| unsigned int shift = mc->shift; |
| unsigned int rshift = mc->rshift; |
| int max = mc->max; |
| unsigned int mask = (1 << fls(max)) - 1; |
| unsigned int invert = mc->invert; |
| |
| ucontrol->value.integer.value[0] = |
| (snd_soc_read(codec, reg) >> shift) & mask; |
| if (shift != rshift) |
| ucontrol->value.integer.value[1] = |
| (snd_soc_read(codec, reg) >> rshift) & mask; |
| if (invert) { |
| ucontrol->value.integer.value[0] = |
| max - ucontrol->value.integer.value[0]; |
| if (shift != rshift) |
| ucontrol->value.integer.value[1] = |
| max - ucontrol->value.integer.value[1]; |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_get_volsw); |
| |
| /** |
| * snd_soc_put_volsw - single mixer put callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to set the value of a single mixer control. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| unsigned int reg = mc->reg; |
| unsigned int shift = mc->shift; |
| unsigned int rshift = mc->rshift; |
| int max = mc->max; |
| unsigned int mask = (1 << fls(max)) - 1; |
| unsigned int invert = mc->invert; |
| unsigned int val, val2, val_mask; |
| |
| val = (ucontrol->value.integer.value[0] & mask); |
| if (invert) |
| val = max - val; |
| val_mask = mask << shift; |
| val = val << shift; |
| if (shift != rshift) { |
| val2 = (ucontrol->value.integer.value[1] & mask); |
| if (invert) |
| val2 = max - val2; |
| val_mask |= mask << rshift; |
| val |= val2 << rshift; |
| } |
| return snd_soc_update_bits_locked(codec, reg, val_mask, val); |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_put_volsw); |
| |
| /** |
| * snd_soc_info_volsw_2r - double mixer info callback |
| * @kcontrol: mixer control |
| * @uinfo: control element information |
| * |
| * Callback to provide information about a double mixer control that |
| * spans 2 codec registers. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_info *uinfo) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| int platform_max; |
| |
| if (!mc->platform_max) |
| mc->platform_max = mc->max; |
| platform_max = mc->platform_max; |
| |
| if (platform_max == 1 && !strstr(kcontrol->id.name, " Volume")) |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; |
| else |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| |
| uinfo->count = 2; |
| uinfo->value.integer.min = 0; |
| uinfo->value.integer.max = platform_max; |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); |
| |
| /** |
| * snd_soc_get_volsw_2r - double mixer get callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to get the value of a double mixer control that spans 2 registers. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| unsigned int reg = mc->reg; |
| unsigned int reg2 = mc->rreg; |
| unsigned int shift = mc->shift; |
| int max = mc->max; |
| unsigned int mask = (1 << fls(max)) - 1; |
| unsigned int invert = mc->invert; |
| |
| ucontrol->value.integer.value[0] = |
| (snd_soc_read(codec, reg) >> shift) & mask; |
| ucontrol->value.integer.value[1] = |
| (snd_soc_read(codec, reg2) >> shift) & mask; |
| if (invert) { |
| ucontrol->value.integer.value[0] = |
| max - ucontrol->value.integer.value[0]; |
| ucontrol->value.integer.value[1] = |
| max - ucontrol->value.integer.value[1]; |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); |
| |
| /** |
| * snd_soc_put_volsw_2r - double mixer set callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to set the value of a double mixer control that spans 2 registers. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
| unsigned int reg = mc->reg; |
| unsigned int reg2 = mc->rreg; |
| unsigned int shift = mc->shift; |
| int max = mc->max; |
| unsigned int mask = (1 << fls(max)) - 1; |
| unsigned int invert = mc->invert; |
| int err; |
| unsigned int val, val2, val_mask; |
| |
| val_mask = mask << shift; |
| val = (ucontrol->value.integer.value[0] & mask); |
| val2 = (ucontrol->value.integer.value[1] & mask); |
| |
| if (invert) { |
| val = max - val; |
| val2 = max - val2; |
| } |
| |
| val = val << shift; |
| val2 = val2 << shift; |
| |
| err = snd_soc_update_bits_locked(codec, reg, val_mask, val); |
| if (err < 0) |
| return err; |
| |
| err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2); |
| return err; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); |
| |
| /** |
| * snd_soc_info_volsw_s8 - signed mixer info callback |
| * @kcontrol: mixer control |
| * @uinfo: control element information |
| * |
| * Callback to provide information about a signed mixer control. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_info *uinfo) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| int platform_max; |
| int min = mc->min; |
| |
| if (!mc->platform_max) |
| mc->platform_max = mc->max; |
| platform_max = mc->platform_max; |
| |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| uinfo->count = 2; |
| uinfo->value.integer.min = 0; |
| uinfo->value.integer.max = platform_max - min; |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(snd_soc_info_volsw_s8); |
| |
| /** |
| * snd_soc_get_volsw_s8 - signed mixer get callback |
| * @kcontrol: mixer control |
| * @ucontrol: control element information |
| * |
| * Callback to get the value of a signed mixer control. |
| * |
| * Returns 0 for success. |
| */ |
| int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct soc_mixer_control *mc = |
| (struct soc_mixer_control *)kcontrol->private_value; |
| |
